Method and apparatus for assembly of stair forms

Abstract

Construction forms for making concrete forms for making stairs have a bracket with a stringer mount face and a riser mount face. Each mount face has mounting structure located thereon. A longitudinally extending stringer stop extends away from and perpendicular to a stringer mount plane in a first direction, the stringer stop having a surface adapted to abut a bottom of a stringer. A laterally extending first riser stop has a first riser abutting surface. The first riser stop extends laterally away from the riser mount face in a second direction and is longitudinally spaced a first distance from the stringier stop. The second direction is perpendicular to the first direction. The first riser abutting surface is adapted to abut a top of a riser. Use of the bracket in an assembly with a stringer and a riser are also disclosed.

Description

SUMMARY OF THE INVENTIONThe present invention relates to construction forms and more specifically to a device for making concrete forms for making stairs. Pouring concrete requires a form to hold the liquid concrete until it can dry to its solid form. The top surface of the wet concrete is left open to allow excess material removal. Creating a form to pour stairs involves securing a set of risers to a set of stringers. The risers contain the wet concrete and when removed correspond to the rise of each step. The top surface of the wet concrete hardens to form the tread of each step. Currently, a stair form is created by cutting portions out of a piece of wood (see FIGS. 8-9). Removing the outline of the stairs, including the thickness of the risers and a finishing space, forms a stringer. The stringer is then hung in place by anchoring at a floor elevation and securing at a landing elevation. Additional stringers are added at regular intervals between the right and left sides of the ...

AI Technical Summary

Benefits of technology

The present invention relates to construction forms and more specifically to a device for making concrete forms for making stairs. Pouring concrete requires a form to hold the liquid concrete until it can dry to its solid form. The top surface of the wet concrete is left open to allow excess material removal. Creating a form to pour stairs involves securing a set of risers to a set of stringers. The risers contain the wet concrete and when removed correspond to the rise of each step. The top surface of the wet concrete hardens to form the tread of each step. Currently, a stair form is created by cutting portions out of a piece of wood (see FIGS. 8-9). Removing the outline of the stairs, including the thickness of the risers and a finishing space, forms a stringer. The stringer is then hung in place by anchoring at a floor elevation and securing at a landing elevation. Additional stringers are added at regular intervals between the right and left sides of the desired stairs. A portion of each riser is removed to allow a finish tool access to the portion of the tread adjacent the next rise. The risers are then secured at a right angle to the stringer using an additional block of wood attached to both the stringer and the riser. After the concrete dries, the risers and stringers are removed and the stringers must be discarded because of the unlikelihood of needing that exact configuration. This method of creating stair forms is time consuming and wasteful. There is a need for a system that is quicker and allows reuse of the stringers.

Problems solved by technology

This method of creating stair forms is time consuming and wasteful.

Concrete work is notoriously messy and the back surface of the apparatus does not pivot well when dirty.

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